Pattern series
Reconciliation / Background Repair
6 System Design questions share this exact tag. Use the closely related series below for a fuller drill.
- 01Preview
Donation Platform
Design a donation platform like GoFundMe — a campaign can go viral overnight and receive a massive spike of small donations, and every dollar must be...
Practice bank - 02Preview
Payment System
Design a payment system for an e-commerce product — money must move correctly between buyer, platform, and seller even when networks fail mid-transact...
Stripe - 03Preview
Spend Management System
Design a corporate spend management platform like Brex or Ramp — every card swipe must be authorized or declined against a live policy engine in under...
Brex - 04Preview
Distributed Key-Value Store
Design a Dynamo-style highly available key-value store: partition keys across nodes with consistent hashing, replicate each key to N nodes, and let ev...
Practice bank - 05Preview
Stock Exchange
Design the core trading system of a stock exchange: accept orders into a central limit order book, match at price-time priority, and when your own boo...
Practice bank - 06Preview
Object Storage
Design an S3-like object storage service that stores billions of immutable blobs durably and cheaply.
Amazon / Backblaze